derek.holloway
7502bf64a4
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70 lines
1.5 KiB
LLVM
70 lines
1.5 KiB
LLVM
; Test 64-bit XORs in which the second operand is constant.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check the lowest useful XILF value.
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define i64 @f1(i64 %a) {
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; CHECK-LABEL: f1:
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; CHECK: xilf %r2, 1
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; CHECK: br %r14
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%xor = xor i64 %a, 1
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ret i64 %xor
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}
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; Check the high end of the XILF range.
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define i64 @f2(i64 %a) {
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; CHECK-LABEL: f2:
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; CHECK: xilf %r2, 4294967295
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; CHECK: br %r14
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%xor = xor i64 %a, 4294967295
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ret i64 %xor
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}
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; Check the lowest useful XIHF value, which is one up from the above.
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define i64 @f3(i64 %a) {
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; CHECK-LABEL: f3:
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; CHECK: xihf %r2, 1
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; CHECK: br %r14
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%xor = xor i64 %a, 4294967296
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ret i64 %xor
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}
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; Check the next value up again, which needs a combination of XIHF and XILF.
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define i64 @f4(i64 %a) {
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; CHECK-LABEL: f4:
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; CHECK: xihf %r2, 1
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; CHECK: xilf %r2, 4294967295
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; CHECK: br %r14
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%xor = xor i64 %a, 8589934591
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ret i64 %xor
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}
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; Check the high end of the XIHF range.
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define i64 @f5(i64 %a) {
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; CHECK-LABEL: f5:
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; CHECK: xihf %r2, 4294967295
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; CHECK: br %r14
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%xor = xor i64 %a, -4294967296
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ret i64 %xor
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}
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; Check the next value up, which again must use XIHF and XILF.
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define i64 @f6(i64 %a) {
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; CHECK-LABEL: f6:
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; CHECK: xihf %r2, 4294967295
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; CHECK: xilf %r2, 1
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; CHECK: br %r14
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%xor = xor i64 %a, -4294967295
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ret i64 %xor
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}
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; Check full bitwise negation
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define i64 @f7(i64 %a) {
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; CHECK-LABEL: f7:
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; CHECK: lcgr %r2, %r2
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; CHECK: aghi %r2, -1
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; CHECK: br %r14
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%xor = xor i64 %a, -1
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ret i64 %xor
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}
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